'Line' in the Bible

Therefore thus saith the LORD; I am returned to Jerusalem with mercies: my house shall be built in it, saith the LORD of hosts, and a line shall be stretched forth upon Jerusalem.

I lifted up mine eyes again, and looked, and behold a man with a measuring line in his hand.

For who has had a poor opinion of the day of small things? for they will be glad when they see the weighted measuring-line in the hand of Zerubbabel. Then he said in answer to me, These seven lights are the eyes of the Lord which go quickly up and down through all the earth.